IntelBX80684I58400
AMDFD837EWMHKBOX

6 Cores, 6 Threads @2.8GHz, Coffee Lake.
Release date: Q4 2017.

8 Cores, 8 Threads @3.3GHz, Piledriver.
Release date: Q3 2014.

Real World Speed
Performance profile from 100,847 user samples
97,953 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 79% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Poor: 79% Great: 94%
SPEED RANK: 56th / 1173
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 64%
Destroyer
2,894 User Benchmarks
Best Bench: 62% Base clock 4.9 GHz, turbo 4.9 GHz (avg)
Worst Bench: 36% Base clock 3.3 GHz
Poor: 36% Great: 62%
SPEED RANK: 380th / 1173
Gaming
Gaming 49%
Yacht
Desktop
Desktop 49%
Yacht
Workstation
Workstation 38%
Jet ski
Effective Speed
Effective CPU Speed
88.5 % Hugely faster effective speed.
+82%
48.6 %
SC Mixed
Avg. Single Core Mixed Speed
117 Pts Much faster single-core speed.
+72%
68.1 Pts
QC Mixed
Avg. Quad Core Mixed Speed
449 Pts Hugely faster quad-core speed.
+92%
234 Pts
MC Mixed
Avg. Multi Core Mixed Speed
646 Pts Much faster multi-core speed.
+60%
404 Pts
SC Mixed
OC Single Core Mixed Speed
123 Pts Much faster OC single-core speed.
+49%
82.6 Pts
QC Mixed
OC Quad Core Mixed Speed
476 Pts Much faster OC quad-core speed.
+55%
308 Pts
MC Mixed
OC Multi Core Mixed Speed
700 Pts Much faster OC multi-core speed.
+30%
537 Pts
Market Share
Based on 18,581,694 CPUs tested.
Market Share
Market Share (trailing 30 days)
1.14 % Insanely higher market share.
+5,600%
0.02 %
Value
Value For Money
102 % Much better value.
+64%
62.3 %
User Rating
UBM User Rating
111 % Hugely more popular.
+95%
57 %
Price
Price (score)
$199 $150 Cheaper.
+25%
Age
Newest
21 Months Much more recent.
+64%
58 Months
TDP
Thermal Design Power (TDP)
65 Watts Much more energy efficient.
+32%
95 Watts
Cores
CPU Processing Cores
6 cores 8 cores Much higher core count.
+33%
Threads
CPU Processing Threads
6 threads 8 threads Much higher thread count.
+33%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+56%
32 nm
Base Clock
Base Clock Speed
2.8 GHz 3.3 GHz Faster base frequency.
+18%
Turbo Clock
Turbo Clock Speed
4 GHz 4.3 GHz Slightly faster turbo frequency.
+8%
SC Int
Single Core Integer Speed
118 Pts Much faster single-core int speed.
+34%
88 Pts
SC Float
Single Core Floating Point Speed
128 Pts Much faster single-core fp speed.
+65%
77.6 Pts
QC Int
Quad Core Integer Speed
460 Pts Much faster quad-core int speed.
+41%
327 Pts
QC Float
Quad Core Floating Point Speed
498 Pts Much faster quad-core fp speed.
+75%
285 Pts
MC Int
Multi Core Integer Speed
667 Pts Faster multi-core int speed.
+21%
551 Pts
MC Float
Multi Core Floating Point Speed
738 Pts Much faster multi-core fp speed.
+57%
469 Pts
Series
CPU Architecture
Coffee Lake Piledriver
Socket
Motherboard Socket
FCLGA1151 AM3+
Graphics
Integrated Graphics
UHD 630 None
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The i5-8400 is a competitively priced hex-core processor from Intel’s 8th generation of Core processors (Coffee Lake). Along with the release of the unlocked i5-8600K, this is the first time that six-core processors have featured in the i5 line-up. Like the other Coffee Lake processors, the i5-8400 is based upon an improved version of Intel’s 14nm architecture which featured in both Skylake and Kaby Lake. Early benchmarks reveal that for average quad core usage (most games employ a maximum of four cores) the i5-8400 performs way above its pay grade. It achieves quad core mixed speeds close to Intel’s outgoing 2017 flagship the $300, quad-core, 8 thread i7-7700k, which to date has been a strong favourite for high-end gaming setups. On paper, the i5-8400 has a base clock of 2.8 GHz (Intel are significantly downplaying the performance of this SKU by giving it a relatively low nominal base clock), an all core boost of 3.8 GHz (this is the effective base clock figure that counts) and a single core boost of 4 GHz. This compares reasonably well to the i5-8600K which has a base clock of 3.6 GHz, all core boost of 4.1 GHz and a single core boost of 4.3 GHz. The i5-8400 also features 9MB of L3 cache and an energy-thrifty TDP of 65W. Priced at under $190, the i5-8400 offers fantastic value for money. Unfortunately, like the other Coffee Lake processors, the i5-8400 will require a new 300 series motherboard, and at the time of writing, the only available version is Intel’s high-end Z370 which isn't an ideal pairing for the i5-8400. The Z series motherboards are designed to cater for the unlocked and overclockable "K" SKUs. Cheaper 300 series motherboards will be available in 2018 at which time the 8400 will offer even better value for money. [Oct '17 CPUPro]

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The FX-8370E is an energy efficient Vishera eight core desktop processor based on AMD’s Piledriver architecture. It was launched in September 2014 and is the energy efficient version of the FX-8370 boasting a lower TDP of 95 Watts versus 125 Watts on the FX-8370. Comparing the 8370E and 8370 shows that the lower TDP comes at a cost: the 8370E scores a relatively lacklustre effective speed of 73 compared to the non-E version which scores 83. The lower score is consistent with the relative clock speeds: 3.3 GHz on the 8370E versus 4.0 GHz on the 8370. Priced the same as the 8370, there is a direct choice between being green or speedy. Or, if you don’t really need the above average multi-threaded performance that the 8370E offers, then you may be better off with the superb single-threaded performance from any number of Intel’s offerings. [Dec '14 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) July 2019 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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  • - CPU tests include: integer, floating and string.
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  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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